:root {
  --bg: #eef2ee;
  --bg-alt: #f6f8f5;
  --ink: #14211b;
  --ink-soft: #3b4942;
  --muted: #62706a;
  --line: #d2dbd5;
  --pine: #1b473a;
  --pine-deep: #10241d;
  --pine-mid: #2c5c4c;
  --moss: #4a7763;
  --wa: #25d366;
  --wa-hover: #1ebe57;
  --paper: #ffffff;
  --copper: #b45d32;
  --header-h: 64px;
  --max: 1120px;
  --radius: 8px;
  --shadow: 0 12px 32px rgba(16, 36, 28, 0.14);
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", "Segoe UI", sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.65;
  letter-spacing: 0;
  font-size: 16px;
}
img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button, input, textarea { font-family: inherit; }
.skip {
  position: absolute;
  left: -999px;
  top: 8px;
}
.skip:focus {
  left: 8px;
  z-index: 80;
  background: #fff;
  padding: 8px 12px;
}

.wrap {
  width: min(var(--max), calc(100% - 48px));
  margin: 0 auto;
}

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 40;
  height: var(--header-h);
  color: var(--ink);
  background: rgba(247, 249, 246, 0.92);
  box-shadow: 0 1px 0 var(--line);
  transition: background 180ms ease, color 180ms ease, box-shadow 180ms ease;
}
.site-header.is-solid {
  background: rgba(247, 249, 246, 0.96);
  color: var(--ink);
  box-shadow: 0 1px 0 var(--line);
}
.site-header__inner {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  min-height: 40px;
  flex: 0 0 auto;
}
.brand__mark {
  width: 32px;
  height: 32px;
  color: currentColor;
}
.brand__name {
  font-family: "Noto Serif SC", "Songti SC", Georgia, serif;
  font-size: 20px;
  font-weight: 700;
  line-height: 1;
}
.brand__sub {
  display: block;
  margin-top: 3px;
  font-size: 11px;
  color: currentColor;
  opacity: 0.72;
  line-height: 1;
}
.nav {
  display: flex;
  align-items: center;
  gap: 22px;
}
.nav a {
  display: inline-flex;
  align-items: center;
  min-height: 40px;
  font-size: 14px;
  color: currentColor;
  opacity: 0.9;
}
.nav a:hover { opacity: 1; }

.hero {
  position: relative;
  min-height: 0;
  color: var(--ink);
  background: var(--bg-alt);
  padding-top: var(--header-h);
}
.hero__media {
  position: relative;
  height: 420px;
  overflow: hidden;
}
.hero__media img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: 68% 38%;
}
.hero__content {
  position: relative;
  z-index: 1;
  padding: 28px 0 32px;
  max-width: 720px;
}
.kicker {
  font-size: 13px;
  font-weight: 600;
  color: var(--pine);
  margin-bottom: 10px;
}
.hero h1 {
  font-family: "Noto Serif SC", "Songti SC", Georgia, serif;
  font-size: 52px;
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 16px;
  color: #10211a;
  display: inline-block;
  padding-bottom: 10px;
  border-bottom: 1px solid #c5d0c9;
}
.lede {
  font-size: 17px;
  line-height: 1.7;
  color: #24332c;
  max-width: 36em;
  margin-bottom: 16px;
}
.hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 18px;
  font-size: 14px;
  color: #2c3d35;
  margin-bottom: 22px;
}
.hero-meta span {
  position: relative;
  padding-left: 12px;
}
.hero-meta span::before {
  content: "";
  position: absolute;
  left: 0;
  top: 8px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #c9a36a;
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 48px;
  padding: 0 18px;
  border-radius: 8px;
  border: 1px solid transparent;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  white-space: nowrap;
}
.btn svg {
  width: 20px;
  height: 20px;
  flex: 0 0 auto;
}
.btn--wa {
  background: var(--wa);
  color: #fff;
}
.btn--wa:hover { background: var(--wa-hover); }
.btn--wa-light {
  background: #edf6f2;
  color: var(--pine-deep);
  border-color: #cfe3d9;
}
.btn--wa-light:hover { background: #e1efe8; }
.btn--ghost {
  background: transparent;
  color: inherit;
  border-color: currentColor;
  opacity: 0.92;
}

.trust {
  background: var(--bg-alt);
  border-top: 1px solid rgba(255,255,255,0.08);
  border-bottom: 1px solid var(--line);
}
.trust__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  min-height: 96px;
}
.trust__item {
  padding: 18px 20px;
  border-right: 1px solid var(--line);
}
.trust__item:last-child { border-right: 0; }
.trust__item strong {
  display: block;
  font-size: 15px;
  font-weight: 600;
  line-height: 1.4;
  margin-bottom: 4px;
}
.trust__item p {
  color: var(--muted);
  font-size: 13px;
  line-height: 1.45;
}

.section {
  padding: 72px 0;
}
.section--alt { background: var(--bg-alt); }
.section--pine {
  background: var(--pine-deep);
  color: #eef5f1;
}
.section__head {
  display: grid;
  grid-template-columns: 180px 1fr;
  gap: 24px;
  margin-bottom: 28px;
  align-items: end;
}
.eyebrow {
  font-size: 22px;
  font-weight: 700;
  color: var(--copper);
  line-height: 1.3;
}
.section--pine .eyebrow { color: #d7b07a; }
h2 {
  font-family: "Noto Serif SC", "Songti SC", Georgia, serif;
  font-size: 28px;
  line-height: 1.3;
  font-weight: 700;
}
.section__intro {
  color: var(--ink-soft);
  max-width: 40em;
}
.section--pine .section__intro { color: #c5d4cc; }

.scene {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 36px;
  align-items: center;
  padding: 28px 0;
  border-top: 1px solid var(--line);
}
.scene:last-child { padding-bottom: 0; }
.scene--flip { grid-template-columns: 0.95fr 1.05fr; }
.scene--flip .scene__copy { order: -1; }
.scene__photo {
  overflow: hidden;
  border-radius: 8px;
  aspect-ratio: 16 / 10;
  background: #d9e0db;
}
.scene__photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.scene__index {
  font-size: 13px;
  font-weight: 600;
  color: var(--moss);
  margin-bottom: 8px;
}
.scene h3 {
  font-family: "Noto Serif SC", "Songti SC", Georgia, serif;
  font-size: 24px;
  line-height: 1.35;
  margin-bottom: 10px;
}
.scene p { color: var(--ink-soft); }

.rules {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 28px;
  align-items: start;
}
.spec {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 8px;
  overflow: hidden;
}
.spec + .note-panel {
  margin-top: 16px;
}
.spec__row {
  display: grid;
  grid-template-columns: 108px 1fr;
  gap: 12px;
  padding: 14px 18px;
  border-top: 1px solid var(--line);
  align-items: start;
}
.spec__row:first-child { border-top: 0; }
.spec__row dt {
  font-size: 13px;
  font-weight: 600;
  color: var(--pine);
  padding-top: 2px;
}
.spec__row dd {
  font-size: 15px;
  color: var(--ink);
}
.note-panel {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 18px 18px 16px;
}
.note-panel h3 {
  font-size: 16px;
  margin-bottom: 8px;
}
.note-panel p {
  color: var(--ink-soft);
  font-size: 14px;
}
.chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 14px;
}
.chip {
  min-height: 32px;
  padding: 4px 10px;
  border: 1px solid var(--line);
  border-radius: 8px;
  font-size: 13px;
  background: var(--bg-alt);
}

.steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.step {
  padding: 22px 20px 20px;
  border-right: 1px solid var(--line);
  min-height: 168px;
}
.step:last-child { border-right: 0; }
.step__num {
  font-family: "Noto Serif SC", Georgia, serif;
  font-size: 22px;
  color: var(--pine-mid);
  margin-bottom: 10px;
}
.step h3 {
  font-size: 16px;
  margin-bottom: 8px;
}
.step p {
  font-size: 14px;
  color: var(--ink-soft);
}

.safety {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}
.safety article {
  min-height: 132px;
}
.safety svg {
  width: 22px;
  height: 22px;
  margin-bottom: 12px;
  color: #d7b07a;
}
.safety h3 {
  font-size: 17px;
  margin-bottom: 8px;
}
.safety p {
  color: #c5d4cc;
  font-size: 14px;
}

.faq {
  border-top: 1px solid var(--line);
}
.faq details {
  border-bottom: 1px solid var(--line);
}
.faq summary {
  list-style: none;
  cursor: pointer;
  min-height: 56px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  font-weight: 600;
  font-size: 16px;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: "";
  width: 10px;
  height: 10px;
  border-right: 1.5px solid var(--ink);
  border-bottom: 1.5px solid var(--ink);
  transform: rotate(45deg);
  flex: 0 0 auto;
  margin-top: -4px;
}
.faq details[open] summary::after {
  transform: rotate(225deg);
  margin-top: 4px;
}
.faq details p {
  color: var(--ink-soft);
  padding: 0 0 16px;
  max-width: 52em;
}

.cta {
  padding: 56px 0 52px;
  text-align: left;
}
.cta h2 { margin: 8px 0 12px; }
.cta p {
  color: var(--ink-soft);
  max-width: 40em;
  margin-bottom: 20px;
}

.site-footer {
  background: #101916;
  color: #c5d0ca;
  padding: 28px 0 24px;
  font-size: 13px;
}
.site-footer__grid {
  display: grid;
  grid-template-columns: 1.3fr 1fr;
  gap: 24px;
}
.site-footer strong { color: #eef4f0; }
.site-footer p + p { margin-top: 8px; }
.site-footer code {
  font-family: ui-monospace, SFMono-Regular, Consolas, monospace;
  font-size: 12px;
  background: rgba(255,255,255,0.08);
  padding: 1px 5px;
  border-radius: 4px;
}
.btn:focus-visible,
.nav a:focus-visible,
summary:focus-visible,
.wa-dock__close:focus-visible,
.wa-dock__tab:focus-visible {
  outline: 2px solid #d7b07a;
  outline-offset: 2px;
}

.wa-dock {
  position: fixed;
  right: 16px;
  top: 50%;
  bottom: auto;
  transform: translateY(-50%);
  z-index: 50;
  width: auto;
  max-width: 280px;
}
.wa-dock:not(.is-min) {
  width: 280px;
}
.wa-dock.is-min {
  width: 56px;
}
.wa-dock__panel {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: var(--shadow);
  padding: 16px;
}
.wa-dock__top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  margin-bottom: 8px;
}
.wa-dock__live {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 700;
  font-size: 14px;
}
.wa-dock__live i {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #1f8a55;
  display: inline-block;
}
.wa-dock__close {
  width: 28px;
  height: 28px;
  border: 0;
  background: transparent;
  color: var(--muted);
  cursor: pointer;
  font-size: 18px;
  line-height: 1;
}
.wa-dock p {
  font-size: 13px;
  color: var(--ink-soft);
  margin-bottom: 12px;
}
.wa-dock .btn { width: 100%; }
.wa-dock__tab {
  text-decoration: none;
  display: none;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  border: 0;
  background: var(--wa);
  color: #fff;
  box-shadow: var(--shadow);
  cursor: pointer;
  align-items: center;
  justify-content: center;
  margin-left: auto;
}
.wa-dock__tab svg {
  width: 28px;
  height: 28px;
  color: #fff;
}
.wa-dock.is-min .wa-dock__panel { display: none; }
.wa-dock.is-min .wa-dock__tab {
  text-decoration: none; display: flex; }

@media (max-width: 960px) {
  .wrap { width: min(var(--max), calc(100% - 32px)); }
  .nav { display: none; }
  .hero__media { height: 220px; }
  .hero__media img { object-position: 70% 36%; }
  .hero h1 { font-size: 36px; }
  .hero__content { padding: 22px 0 24px; }
  .trust__grid,
  .steps,
  .safety,
  .rules,
  .scene,
  .scene--flip,
  .section__head,
  .site-footer__grid {
    grid-template-columns: 1fr;
  }
  .scene--flip .scene__copy { order: 0; }
  .trust__item,
  .step {
    border-right: 0;
    border-bottom: 1px solid var(--line);
    min-height: 0;
  }
  .trust__item:last-child,
  .step:last-child { border-bottom: 0; }
  .section { padding: 56px 0; }
  .wa-dock { width: auto; }
  .wa-dock:not(.is-min) { width: min(280px, calc(100vw - 24px)); }
}

@media (max-width: 640px) {
  .hero-meta { gap: 8px 12px; }
  .hero h1 { font-size: 34px; }
  .lede { font-size: 15px; }
  .btn { width: max-content; max-width: 100%; }
  .spec__row { grid-template-columns: 1fr; gap: 4px; }
  h2 { font-size: 24px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .site-header { transition: none; }
}